# MarkChart vs TinyWalk

The clearest difference is rating: TinyWalk at 5.0 against MarkChart's 4.0. TinyWalk also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 3 weeks). MarkChart's advantage is ads (none vs shown) and ratings volume (14 vs 2). On price, monetization model and iOS requirement there is nothing between them.

Both are free to download. MarkChart sells 1 one-off in-app purchase. TinyWalk asks for nothing beyond the download.

TinyWalk holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: MarkChart has 14 ratings behind it against 2, so its average is the more settled of the two.

MarkChart ships an update every 3 weeks, TinyWalk weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | MarkChart | TinyWalk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (14 ratings)](https://appshunter.io/ios/app/markchart-mermaid-editor/id6475648822/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tinywalk-health-test-data/id6792443844/reviews)** |
| Number of ratings | **14** | 2 |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 56 MB | 5 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre Colucci](https://appshunter.io/developer/1478787437) | [Lu Cheng Wei](https://appshunter.io/developer/1119072701) |

## What reviewers say

### MarkChart

[App page](https://appshunter.io/ios/app/markchart-mermaid-editor/id6475648822)

This app allows you to easily create and preview diagrams using a Markdown-inspired text syntax. It offers templates for various diagram types and supports automatic updates when used with external editors. Export your creations to common image formats.

**Highlights:** Mermaid diagram editing, Real-time preview, Built-in templates, Automatic updates, Export to PDF, PNG, SVG, Syntax highlighting, Dark Mode support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MarkChart Pro | $12.99 | one-time |


### TinyWalk

[App page](https://appshunter.io/ios/app/tinywalk-health-test-data/id6792443844)

This utility generates synthetic HealthKit test data for developers. It creates realistic step counts, distances, and workouts to help test your health apps without manual entry or simulator limitations. Supports various dataset sizes and generation modes.

**Highlights:** Generate synthetic HealthKit data, Create step count and distance samples, Simulate workout sessions, Control data provenance (user-entered vs. device), Back-dated and live generation modes, Background continuation for long runs, Realistic sample variance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MarkChart free?

MarkChart is free to download, with in-app purchases available.

### Is TinyWalk free?

TinyWalk is free to download, with no in-app purchases.

### Which has better reviews, MarkChart or TinyWalk?

TinyWalk is rated higher. MarkChart averages 4.0 out of 5 from 14 ratings, while TinyWalk averages 5.0 from 2 ratings.

### Do MarkChart or TinyWalk have ads?

TinyWalk shows ads; MarkChart does not.

### Which is updated more often, MarkChart or TinyWalk?

MarkChart ships an update every 3 weeks, and TinyWalk weekly. Most recently, MarkChart was updated on October 27, 2026 and TinyWalk on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*